user interaction

system settings
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Here you can edit the visibility options: set the trail length and trail visibility.

take a snapshot
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Take a snapshot of the screen.

create new system
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Create a new system set the number of planets and choose system type.



select planet
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tap to select a planet then pinch to increase it's radius

add planet
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set radius and density then tap to add a new planet to the system

follow planet
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tap to select a planet then pinch to increase it's radius

remove planet
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tap to select a planet then pinch to increase it's radius

2 finger pan
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pan the view with a 2 finger drag

1 finger rotate
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touch and drag with one finger to rotate the system

pinch zoom
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pinch to zoom in and out of the system



drag planet
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touch and drag a planet

flick planet
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flick a planet to give it a new velocity

increase radius
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pinch on a selected planet to increase it's radius

tap planet
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depending on tool selection: tap to select, add, remove or follow planet

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